Telecommunications & Media
The world of undersea cables for subsea communications
A vast communications network runs beneath the ocean, carrying most international data through undersea cables. Despite advances in satellite communications, the ITU says more than 99 percent of global cross-border data flows through subsea systems. The cables transmit data as light through optical fibre, boosted by repeaters powered through conductors in the cable. Landing stations link subsea networks to domestic backbones. In South Korea, operators such as SK Broadband are expanding subsea links as AI data centres spread.
